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放射性元素
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astatine
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人工放射性元素,元素符号At,原子序数85,半衰期最长的同位素的质量数210,属周期系ⅦA族,卤族元素。英文名称来源于希腊文astatos(不稳定)。
Astronomy
全称:astatine。缩写:At
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>放射化学与辐射化学>放射性元素化学>释义
astatine
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criminal interrogation
Criminal Interrogation and Confessions
criminal interview and interrogation technique
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criminal of damage precious or endangered wild animals
criminal of damaging wild animal resources
criminal of illegal hunting
criminal of illegally hunting, buying, transporting and selling of terrestrial wild animals
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